latourelle



. LATOURELLE. WATER HEATER.

APPLICATION FILED DEC, 16. 1918. 1,326,277.

Patented Dec. 30,1919.

2 SHEETS-SHEET I- 2 SHEETS-SHEET 2.

Patented Dec. 30, 1919.

T. LATUUHELLE. WATER HEATER APPLICATION FILED DEC. I6. |918.

WATER-HEATER.

Specification of Letters Patent.

raifnml Dec. so, 191e.

Application filed December 16, 1918. Serial No. 267,002.

T0 all whom it may concern.-

Be it known that l, TLESPHORE LATOU- RELLE, a subject of the King of Great Britain, and residing at Craig street, west, in the city and district of Montreal, in the Province of Quebec, in the Dominion of Canada, have invented a new and useful Water- Heater, of which the following is the 'specication.V

The invention relates to improvements in water heaters as described in the present specification and illustrated in the accompanying drawings same.

The invention consists essentially in the novel construction and arrangement of the parts, whereby a considerable heating surface is assured and the operation greatly facilitated.

The objects of the invention are to cheapen the costs of construction, or replacements and of repairs; to materially increase the heatingA surface within a comparatively small space; to arrange the parts, so that the assembly of the same may 'be accomplished with ease and any part removed and replaced at the least possible expenditure of labor and time; to eliminate complicated constructional features in regard to the tubing and water and steam chambers and passages; to insure the accessibility of the interior for cleaning purposesgand generally to provide for hot water heating in buildings or for heating liquids for various uses, a durable, serviceable and most efficient device adapted to utilize fresh or exhaust steam at a minimum rate of consumption.

In the drawings, Figure 1 is a vertical sectional view of the heater.

Fig. 2 is a view showing an elevation of the heater.

Fig. 3 is a cross sectional view on the' line A-B in Fig. e.

Fig. 4 is a plan view showing the top of water casing and plate cover.

Fig. 5 is a horizontal plan view without plate cover or casing. Fig. 6 isa plan vview of the top of the heater.

Fig. 7 is an enlarged sectional detail showing one set of the steam and water tubes.

Fig. 8 is a sectional detail of a slight modification showing a collecting chamber for condensates within the heater.

Like numerals of reference indicate corresponding parts in each figure.

that form part of the Referring to the drawings, the stand 1 is shown as supporting the inlet casing 2, the latter extending laterally from said stand to the return pipe 3, to which it is joined by the coupling 4.

The inlet casing 2 is flanged at its upper end 5 and supports the ring base 6 on said flange, said Hangs 5 being secured to 4said base by the cap screws 7.

The ring base 6 extends outwardly from the flange 5 and in its outer upper side is formed vwith the annular recess 8, which supports the packing 9.

The base 6 on its upper side flares Outwardly from the upper end of the inlet casing 2, thus forming a wide flaring mouth from said inlet.

The heater casing 10 is preferably of polygonal form in cross section here shown as octagonal and enlarging slightly at the top end into the annular flange 11 and at the bottom end into the annular flange 12, said lower flange 12 being further enlarged at 13 to form an outlet chamber 111 for the condensed steam from which the pipe 15 forms the passage for returning the condensate to the boiler.

rThe casing lOstands on the ring base 6 on top of the packing 9 and is secured by the cap screws 16 through said base 6 into the flange 12.

The casing` 10 at the inner end ofthe flange 11 and on the top side is formed with the annular recess 17.

The device as so far described presents a water chamber 18 having an inlet at the lower end with a flaring mouth, and an outlet at one side for the water condensed during the operations, said chamber being surrounded by an octagonal wall, which permits an exceptionally good andeconomic arrangement of the tubing'.

rlhe chamber 18 is covered at the upper end by the plate 19 preferably made in brass or copper, the parts heretofore described being customarily of cast iron.

The cover plate 19 fits into the annular recess 17 and in thc center has an outlet opening 2O and threaded tube orifices 21 inrows 22 running across the plate from the narrower portion up to the wider portion and following the octagonal design of the casing 10 and leaving the opening 20 in the center quite clear.

The head 23 is in dome shape and preferably made of cast iron, having the outlet 24 centrally through the top and the coupling 25 secured around said opening by the cap screws 26, said coupling being secured to the heating pipe 27 in the -circulanting system, which eventually terminates in the return pipe 3.

Immediately under the outlet opening 24, the outlet chamber 28 is formed by the partition 29, integral with said head 23 and having a central outlet opening 30 registering with the outlet opening 20 in the plate 19, said opening being connected by the tube 31 screw-threaded into position and forming` the passageway for the water from the main chamber 18 to the outlet chamber 28.

The partition 29 is formed with a number of threaded tube orifices 32 of smaller dimensions than the tube orifices 21 and in central alinement therewith.

The head 23 extends below the partition 29 and at one side has the steam inlet 33. The head 23 is secured to the casing 10 by the cap screws 34 extending through the lange v11 into the wall of the said head, which is slightly enlarged at for the purpose.

The space between the partition 29 `and plate 19 is the steam chamber 36, which receives the steam from a suitable generating plant through the inlet 33.

`It will now be Seen that a' complete casing is formed in which there is the main chamber 18 reached through the inlet 2, the steam chamber 36 above said main chamber and forming the distributing center for the steam received from the main plant and the outlet chamber 28, where the water is collected from the tubular passage 31 and the various outlets 32 and discharged through the opening 24 to and through the circulating water system until it reaches the return pipe 3 and inlet 2.

The water tubes 37 are preferably of brass or copper and are screw-threaded into the orifices 32 in the partition 29 and extend downwardly through the steam chamber 36, plate 19, and water chamber 18, terminating adjacent to the lower end of said chamber 18 and forming clear and unobstructed passages forthe water from the chamber 18 to the outlet chamber 28.

The steam tubes 38 encircle the tubes 3 under the plate 19 and are screw-threaded into the orifices 21 in said plate. The tubes 38 terminate above the lower ends of the tubes 37 and are closed by the caps 39 screwthreaded on to said steam tubes and encircling the tubes 37, said caps having the threaded outlets 40, into which are screwthrea'ded the condensate tubes 41. The condensate tubing 41 is of comparatively small dimension and preferably of copper or brass, each tube having the bends 42 0r twists to accommodate the expansion and contraction Qi the, metals` und@ r tem-peratunal changes.

The tubes 41 at their other ends are screwthreaded into the passages through the casing wall and leading to the condensate chamber 14.

In Fig. 8 the only difference of any importance is the situation of the condensate chamber 43 within the chamber 44 corresponding to the chamber 18 and the connection of the steam pipes 45, surrounding the water pipes 46, to said chamber 43 by the various condensate tubes 46. The outlet from said chamber 43 is centrally through the stand 47 by the pipe 48 extending through the gland 4 This arrangement of condensate chamber necessitates archange in the position of the inlet 50 and the substitution of a base plate 5l for the ring` base already described. The base plate 51 `has an annular rib 52 on the under side which rests on the stand 47, the latter having an orifice for the pipe 48. Otherwise the device is constructed as hereinbefore described.

Inv operation this heater receives the water and steam as fully explained in the foregoing and the steam flows down the outer tubes and heats the water in the inner tubes and the water surrounding the outer tubes and as this water in both inner tubes and vchamber 18 heats, it rises and passes through the passage 31 and orifices 32 into the outlet chamber and there discharges into the system of piping and returns as before mentioned.

The steam condenses during the operations and this condensate Hows into the condensate tubes and into and through the condensate outlet to the boiler.

Various changes may be made in the features of the'construction, as set forth herein, without departing from the spirit of the invention, so long as they are within the scope of the claims for novelty following.

IVhat I claim is zl. In a water heater, a casing containing a water chamber-and a steam chamber' to ward the outlet end of said water chamber, the latter being formed in polygonal shape in cross section, and a plurality of steam pipes projecting into said` water chamber from said steam chamber densate drains from their closed ends.`

2. In a water heater, a casing containing a water chamber, a steam chamber and inlet and outlet, said steam chamber surrounding a central passage leading' to said outlet and said water chamber being in cross section of polygonal shape, and a plurality of steam tubes forming straight rows across the chamber from a straight side wall up to the said central passage.

3. In a water heater, a casing containing a water chamber, a steam chamber and inlet and an outlet beyond said steam chamber, the latter surrountl'. e. acentral passage to and having consaid outlet and said water chamber in cross section being formed in octagonal shape, and a plurality of water and steam tubes projecting into said water chamber and arranged in cross rows from four sides up to said central passage.

Il. In a water heater, a casing containing a water chamber and a steam chamber, each having inlets and outlets, a plurality of water tubes connecting the main outlet or' the casing and the water chamber adjacent to the lower end thereof, a plurality of steam tubes extending from said steam chamber into said water chamber around said water tubes and terminating near to the lower ends of said water tubes, caps encircling said water .tubes and closing the ends of said steam tubes and having condensate outlets and bent tubes leading from said condensate outlets to the main condensate outlet. 5. In a device of the class described, a stand, a vertical casing having an inlet and supported on said stand, a plate cover hav` ing tube orices and a central opening therethrough, a head secured to said casing and having in the upper part a chamber .communicating with the outlet thereabo-ve and with the casing therebelow and in the lower part a steam chamber completed by said plate, a plurality of water tubes open at both ends and extending from said tube ori- I'ices to said water chamber, a plurality of steam tubes extending from said plate tube orifices into said water chamber and encircling said water tubes and having closed lower ends and condensate drains therefrom.

6. In a device o the class described, a stand, a vertical cast iron casing supported on said stand having an inlet at its lower end and a condensate outlet, a plate cover of malleable and ductile metal for the upper end of said casing and having a central outlet opening and tube orifices, a plurality of tubes of similar metal extending downwardly from said oriiices and having closures at the lower' ends and condensate drains from said closures, a plurality of water tubes within the aforesaid tubes and projecting through the closures thereoi' and above said plate cover and made of similar` metal, and a cast iron head having a partition therein with tube orifices for said water tubes and a central opening connected by an inclosed passage to said vertical cas ing through said plate cover and having an outlet from the top thereof, said head forming below said partition a steam chamber having a suitable inlet.

7. In a device of the class described, an octagonal vertical casing formed at each end into an annular flange, a ring base secured by screw members to said casing,astand secured to said base, a plate cover over the top of said casing and having threaded tube oriices and central opening, a head mounted en said casing and secured to the upper annular ange by screw members and having a' cross partition with threaded tube orices and central opening and separating an outlet chamber and a steam chamber, water tubes screw-threaded into said partitions, and steam tubes screw-threaded into said plate cover and having closures at the lower ends encircling said water tubes and condensate drainsr from said closures.

Signed at the city of Montreal, Quebec, Canada, this 10th day of December 1918.

TLESPHORE LATOURELLE. 

